Subtraction Facts. First Grade Math Worksheets and Answer Keys, Study Guides and Vocabulary Sets. New Jersey Student Learning Standards

◂Math Worksheets and Study Guides First Grade. Subtraction Facts

Study Guide

Subtraction Facts Worksheet/Answer key

Addition and Subtraction Vocabulary/Answer key

Subtraction Facts

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The resources above correspond to the standards listed below:

New Jersey Student Learning Standards

NJ.1.OA. Operations and Algebraic Thinking

1.OA.B. Understand and apply properties of operations and the relationship between addition and subtraction.

1.OA.B.4. Understand subtraction as an unknown‐addend problem. For example, subtract 10 – 8 by finding the number that makes 10 when added to 8.

1.OA.C. Add and subtract within 20.

1.OA.C.5. Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).

1.OA.C.6. Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 – 4 = 13 – 3 – 1 = 10 – 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 – 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).

NJ.1.NBT. Number and Operations in Base Ten

1.NBT.C. Use place value understanding and properties of operations to add and subtract.

1.NBT.C.4. Add within 100, including adding a two‐digit number and a one‐digit number, and adding a two-digit number and a multiple of 10, using concrete models (e.g., base ten blocks) or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used. Understand that in adding two-digit numbers, one adds tens and tens, ones and ones; and sometimes it is necessary to compose a ten.

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